diff --git a/homeassistant/components/firmata/config_flow.py b/homeassistant/components/firmata/config_flow.py
index b4a9ada2c27..8aa4cfb836c 100644
--- a/homeassistant/components/firmata/config_flow.py
+++ b/homeassistant/components/firmata/config_flow.py
@@ -1,11 +1,13 @@
 """Config flow to configure firmata component."""
 
 import logging
+from typing import Any
 
 from pymata_express.pymata_express_serial import serial
 
 from homeassistant import config_entries
 from homeassistant.const import CONF_NAME
+from homeassistant.data_entry_flow import FlowResult
 
 from .board import get_board
 from .const import CONF_SERIAL_PORT, DOMAIN
@@ -18,7 +20,7 @@ class FirmataFlowHandler(config_entries.ConfigFlow, domain=DOMAIN):
 
     VERSION = 1
 
-    async def async_step_import(self, import_config: dict):
+    async def async_step_import(self, import_config: dict[str, Any]) -> FlowResult:
         """Import a firmata board as a config entry.
 
         This flow is triggered by `async_setup` for configured boards.